In town, blood-sucking incidents are growing frequent. As Kitaro investigates, he receives a letter. The sender wants to be killed. Kitaro goes to visit the sender and meets Onozaki, a genetics researcher. Onozaki has created immortal cells and conducted an experiment where he injected himself with them. As a result, he has obtained an immortal body and also turned into a youkai. When he transformed into a youkai, he lost control and went seeking blood. All the recent blood-sucking incidents were Onozaki's doing. Because of the immortal cells, Onozaki can't kill himself, so he begs Kitaro to kill him, but...
However, when I'm the Odoro-Odoro,
I don't even think of dying.
،ولكن عندما أصبح أودورو-أودورو
.فإنّي لا أفكر بالموت حتى
Aber wenn ich zu Odoro-Odoro werde,
denke ich nicht mehr ans Sterben.
Aunque cuando soy Odoro-Odoro, 
no deseo matarme.
Aunque cuando soy Odoro-Odoro,
no deseo matarme.
Mais lorsque je suis Odoro-odoro,
je ne pense même pas à mourir.
Tuttavia, quando sono Odoro Odoro,
a morire non ci penso proprio.
No entanto, enquanto eu sou
Odoro-Odoro, nem penso em morrer.
Но когда становлюсь Одоро-одоро, 
и мысли о смерти нет.